Expandable pet backpack



FIG. 1 is a perspective view of an expandable pet backpack showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a perspective view of an expandable pet backpack showing my new design where the expandable pet backpack is in a first configuration of use;

FIG. 10 is a perspective view of the expandable pet backpack where the expandable pet backpack is in a second configuration of use;

FIG. 11 is an enlarged view of portion 11 shown in FIG. 1;

FIG. 12 is an enlarged view of portion 12 shown in FIG. 1; and,

FIG. 13 is an enlarged view of portion 13 shown in FIG. 3.

The evenly dashed broken lines depict portions of the expandable pet backpack that form no part of the claimed design. The unevenly dashed broken lines depict the cut line of the sectional views and form no part of the claimed design. 

CLAIM The ornamental design for an expandable pet backpack, as shown and described. 